James montgomery



anion.

JAMES MONTGOMERY, OF NEW YORK, N. Y.

CORRUGATED-IRON PAVEMENT.

Specification of Letters Patent No. 23,038, dated February 22, 1859.

To all whom it 'may concern:

Be it known that I, JAMES WONTGOMERY, of the city, county, and State of New York, have invented certain new and useful Improvements in Metallic Pavements; and I hereby declare the following to be a full and exact description of the same, reference being had to the accompanying drawings, making part of this specilication.

The objects of the said improvements are: to economize metal, to reduce the exposed surface of metal, and to securely retain any concrete or other substance which may be placed within the grooves.

In the accompanying' drawing, Figures l, 2, 3 and l are sections transversely of the corrngations. Fig. 5, is a plan view of a fragment of the pavement and adjoining concrete. Fig. 6, is a section on a smaller scale transversely of the street. Figs. 7 and S, illustrate methods of joining the edges of the corrugated plates. Figs. 9 and l0, are sections. exhibiting modifications to be hereafter referred to.

A, A, A,represent corrugations which are intended to runA transversely of the street and are placed at such a distance apart to accommodate stones of considerable size, among which stones a suitable cement is to be run to form the whole into a solid concrete mass. In the intervals between the large corrugations A, smaller corrugations B, B, are produced.

C, C, O, are spurs or projections formed on the corrugations A, for the joint purpose of affording foot hold for horses and to prevent the shifting of the concrete or other matter with which the grooves are filled.

D, D, represent the rails of a street railway,

The plate A, B, O, D, may be produced in one piece either by casting' or by rolling in a direction transversely of the corrugations by means of rolls grooved longitudinally to form the corrugations A, and B, and so curved in their longitudinal section as to produce the necessary camber 0f the street as shown in Fig. 6. On leaving the rolls the corrugations A, and B, are of the form shown in Figs. l and 2 upon which by a distinct operation immediately succeeding the rst, the said corrugations may be contracted until their sides become parallel as seen in Fig. 3 or until they converge as seen in Fig. 4, so as to form a dovetail cavity or groove into which stone, timber, or other substance may be tightly driven by the pavers mall or otherwise.

In Figs. 9 and l0 are seen methods of applying the rails D, D, in pieces separate from the mainV plate.

The objects of the shallow corrugations B, are to present on the underside the needful inequalities to maintain stability in the pavement; and at the same time to reduce the amount of metal and the extent of exposed metallic surface which would necessarily occur with corrugations of equal size. It will further be observed that the laterally projecting spurs C, shown in Figs. l, 2, and 3, and the dovetail form of groove shown in Fig. 4 afford stability to the concrete, a feature of great importance in grooves of extensive width.

I claim as new and of my invention and desire to secure by Letters Patent- 1. The arrangement and combination substantially as described of the unequal ribs or corrugations A and B, for the purpose set forth.

2. The described form and application of the laterally projecting spurs O for the purposes explained.

3. The dovetail groove shown in Fig. 4l: applied to metallic paving and employed as set forth to retain within it concrete and other matter.

In testimony of which invention, I herew unto set my hand.

JAMES MONTGOMERY.

Witnesses:

Oo'rs. KNIGHT, Enw. F. BROWN. 

